[XLA:GPU] Fix RaggedAllToAll crash and compiler SIGFPE on zero updates.#2803
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[XLA:GPU] Fix RaggedAllToAll crash and compiler SIGFPE on zero updates.#2803copybara-service[bot] wants to merge 1 commit into
copybara-service[bot] wants to merge 1 commit into
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- Add guard in `RaggedAllToAllThunk::RunCollective` to skip execution if `num_total_updates` is 0. - Add guard in `RaggedAllToAllDecomposer` and `RaggedAllToAllMultiHostDecomposer` to replace the instruction with output operand if num_total_updates is 0, avoiding division by zero in the decomposer. PiperOrigin-RevId: 930640978
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[XLA:GPU] Fix RaggedAllToAll crash and compiler SIGFPE on zero updates.
RaggedAllToAllThunk::RunCollectiveto skip execution ifnum_total_updatesis 0.RaggedAllToAllDecomposerandRaggedAllToAllMultiHostDecomposerto replace the instruction with output operand if num_total_updates is 0, avoiding division by zero in the decomposer.